Lot
556 
1867, 2¢ black, E. grill, two singles, left stamp scissors separated, tied by geometric cancels to May 28, 1869 folded letter from Boston to Rosario, Argentina, red numeral "2" credit and partially clear London Paid transit, treated as double rate printed matter and rated as such, Very Fine and rare, the only reported example. Scott Nos. 87 Estimate $750 - 1,000.